my gripes with meteor are: not sure how ddp works or how to scale a meteor app. does not work with postgresql or any other db. The biggest issue for me is the tight coupling to MongoDB. Background: we used Meteor back in mid 2013. we ended up wasting a lot of time and resources because we had to learn everything. when we did, it did not perform so well, over 1MB going back and forth for what could've been achieved wi…
It's not "tightly coupled" to MongoDB; Mongo is simply the only database that livequery (https://www.meteor.com/livequery) has implemented support for at the moment. There are community projects for MySQL and PostgreSQL, as well as partially complete drivers for Redis and Elastic. Official (My)SQL support is on the roadmap and will probably appear later this year.